Manhattan prosecutors aren’t cutting any slack for the handsome broker charged with doing the most damage at an unbridled bar brawl at the otherwise stodgy New York Athletic Club.

The DA’s office is not making any plea offers for Colin Drowica, 30, of Glen Head, LI, prosecutors said yesterday, as the glum-looking alleged brawler stood before a criminal court judge in a gray business suit.

Drowica, a director at Knight Capital, is charged with harassment and misdemeanor assault — which carries up to one year jail — for allegedly punching another man in the club’s Tap Room with enough force to fracture his eye socket.

Drowica then joined with fellow North Shore resident clubgoers Peter Doran and Matthew O’Grady in allegedly beating the heck out of a second man during the April 13 free-for-all.

Doran, 28, of Glen Head and O’Grady, 31, of Glen Cove allegedly repeatedly punched and kicked that rival in his arms and legs, court papers said.

The brawl has been the topic of gleeful chatter in finance-related blogs, most notably on Wall Street Jackass, on which a poster called it “the best fight I’ve ever seen.”